Bell (206A, 206B, 206L, 206L-1, 206L-3, 206L-4, 407, 47B, B3, D, D1, E, C, C-2, H-1, 47G-2A, -2A-1, -3, -3B, -3B1, -3B-27, -4, -4A, -5, -5A, 47J, K, J-2, J-2A)
Bellanca (14-19-3A, 17-30, 17-30A, 17-31A, 17-31ATC, 7EC, 7ECA, 7FC, 7GC, 7GCA, 7GCAA, 7GCB, 7GCBA, 7GCBC, 7HC, 7JC, 7KCAB)
Britten Norman (BN-2, -2A, -2A-2, -2A-6, -2A-8, BN-2A, MK.111)
Cessna (*320, A, B, C, D, E, F, 320-1, 340, 340A, *336, 337, 337A, B, C, D, T337D, 337E, 337F, T337F, T337G, *401, 401A, B, 402A, B, 411, 411A, 421, 421A, 414, 4 21B (*require specific attention to proper balancing of rudder)
310A, B, C, D, E, F, G, H, I, J 310J-1, E310J, 310K, L, N, P, T310P, 310Q, T310Q, U206, U206A, B, C, D, E, F, G, 207, 207A, T207, T207A, 210, 210A, 210B, 210C, 210D, 210E, 210F, T210F, 210G, T210G, 210H, T210H, 210J, T210J, 210K, 210-5(205)
210-5A(205A)
T210K, 210L, T210L, T210M, T210N, 210N, P210N, 310, 182, 182A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, T182, R182, TR182, 185, 185A, B, C, D, E, A185E, A185F, 188, 188A, B, A188, A188A, 188B, T188C, 190, 195, 195A, B, 206, P206, P206A, B, C, D, E, TU206A, B, C, D, E, F,G, TP206A, B, C, D, E, 120, 140, 140A, 150, 150A, B, C, D, E, F, G, H, J, K, L, M, A150K, A150L, AI50M, 152, A152, 170, 170A, 170B, 172, 172A, B, C, D, E, F, G, H, I, K, L, M, N, P, 175,175A, B, D, P172D, 172RG, 177, 177A, B, 177RG, 180, 180A, B, C, D, E, F, G, H, J, K)
Commander Aircraft (112)
deHavilland (DHC-2, MK.I, MK.II, MK.III, DHC-3, DHC-6 MODELS 1, 100, 110, 200, 210, 300)
Dynac (100, 100-180 (require specific attention to proper balancing of rudder))
FH1100 Manufacturing Corporation (FH-1100)
Grumman (G-164, G-164A, G-164B)
Gulfstream (111)
Helio Aircraft (H-250, H-295, H-391, H-391B, H-395, H395A)
Mitsubishi (MU-2B, MU-2B-10, -15, -20, -30)
Mooney Aircraft (M20B, C, D, E, F, G)
Piper (PA-23, PA-23-160, * PA-23-235,* PA-23-250,* PA-E23-250, PA-24, -24-250, 24-260, -24-400, (*require specific attention to proper balancing of rudder)
PA-11, PA-12, PA-14, PA-15, PA-16, PA-17, PA-18 Series, PA-19, PA-20, PA-22 Series, PA-25 Series, (require prior or concurrent installation of STC SA4-977)
PA-28-140, -28-150, -28-151, -28-160, -28-161, -28-180, 28-235, -28S-160, -28R-180, - 28S-180, -28-181, 28R-200, -28R-201, -28R201T, -28RT-201, -28RT-201T,-28 -201T, -28-236, PA-30, PA-39, PA-31P, PA-31, PA-31-300, 325, 350, PA-32-260, -32-300, -32S-30)
Raytheon (Beech) (E55, E55A, 56TC, A56TC, 58, 65-(L23F)
A65, A65-8200, 65A80, 65-A80-8800, 65-B80, 65-88, B90, C90, 65-90, 65-A90, 65-A90-1, (U21A, RU-21A, RU-21D)
65-A90-2, (RU-21B)
65-A90-3, (RU-21C)
70, 60, A60, 99, 99A, 100, F33C, 50(L-23A)
B50(L-23B)
C50, D50(L-23E, D50A, D50B, D50C, D50E, E50 (L-23D, RL-23D)
F50, G50, H50, J50, 95-55, 95-A55, 95-B55, 95-B55B (T-42A)
95-B55D, 95C55, 95, B95, B95A, D95A, E95, D55, D55A, 23, A23, A23A, A23-19, -24, -19A, BI9, M19A, B23, C23, A24, A24R, 35, A35, B35, C35, D35, E35, F35, G35, 35R, H35, J35, K35, M35, N35, P35, S35, V35, V35A, V35B, 35-33, 35-A33, 35-B33, 35-C33, 35-C33A, 36, A36, E33, E33A, E33C, F33, F33A)
Schweizer (269A, 269A-1, 269B, 269C)
Tiger Aircraft (*AA-1, * AA-1A, AA-5 (*require specific attention to proper balancing of rudder))
Twin Commander (500, 500A, 500B, 500-S, &500-U, 520, 560, 560A, 560E, 560F, 680, 680E, -F, 720, 680FL, 680FL (P)
680T, V, W, 681, 690, 685)
Univair Aircraft Corp (108, 108-1, -2, -3, -5)